62 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 65 



Disk 



1. Pentacrinitidae 4 (1) 



f Phrynocrinidae 1 (1) 



*\Bourgueticrinidae 1 (1) 



3. Holopodidae 3 (1) 



4. Plicatocrinidae 5 (1) 



5. Apiocrinidae 



14 (1) 



Arms 



Holopodida; 3 (1) 



Bourgueticrinidae 3 ( I ) 



Apiocrinidae 4 (1) 



Pentacrinitidae 9 (1) 



Phrynocrinidae 6 (1) 



Plicatocrinidae 8(1) 



33 (1) 



Pinnules 



1. Pentacrinitidae 5 (1) 



{Apiocrinidae 4 (1) 



Phrynocrinidae 4 (1) 



Holopodidae 4(1) 



rBourgueticrinidae 5 (1) 



3 ' [Plicatocrinidae 5 (1) 



27 (1) 



General 



f Apiocrinidae o 



I Phrynocrinidae o 



i.-j Bourgueticrinidae 



Holopodidae o 



Plicatocrinidae 



2. Pentacrinitidae 1 (1) 



5 (2) difference 1 (2) 



2 (2) 1 (2) 



2 (2) " 1 (2) 



2 (2) " 1 (1) 



I (2) " 4 (1) 



12 (2) difference 2 (1) 



6 (2) difference 3 (2) 



28 (2) difference 5 (1) 



5 (2) difference o 



8 (2) difference 19 (1) 



i (1) 6 (2) difference 5 (2) 



As shown by the preceding tables, the relative condition of spe- 

 cialization of the various structural units is as follows : 



General 1(1) 6 (2) difference 5 (2) 



Calyx 30 (1) 



Disk 14 (1) 



Column 23 (1) 



Arms 33 (1) 



Pinnules 27 (1) 



128 (1) 



108 (2) difference 20 (1) 



